.TH std::regex_traits::length 3 "2024.06.10" "http://cppreference.com" "C++ Standard Libary"
.SH NAME
std::regex_traits::length \- std::regex_traits::length

.SH Synopsis
   static std::size_t length( const char_type* p );

   Calculates the length of a null-terminated character sequence, that is, the smallest
   i such that p[i] == 0.

   Standard library specializations of std::regex_traits execute
   std::char_traits<CharT>::length(p);.

.SH Parameters

   p - pointer to the first element of the null-terminated character sequence

.SH Return value

   The length of the null-terminated character string.

.SH Example


// Run this code

 #include <iostream>
 #include <regex>

 int main()
 {
     std::cout << std::regex_traits<char>::length("Кошка") << '\\n'
               << std::regex_traits<wchar_t>::length(L"Кошка") << '\\n';
 }

.SH Output:

 10
 5
